1.  What is the unit digit in {(6374)^1793*(625)^317*(341)^491}?

zero
2
3
5

```Answer

Answer: Option  A Explanation:Unit digit in (6374)^1793 = unit digit in (4)^1793
Unit digit in {(4^2)^896*4}
Unit digit in {(6*4) =4.
Unit digit in (625)^317 = unit digit in (5)^317 = 5.
Unit digit in (341)^491 = unit digit in (1)^491 =1
Required digit = unit digit in (4*5*1) =0. ```

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2.  The difference between the place value and the face value of 6 in the numeral 856973 is?

973
6973
5994
None of these

```Answer

Answer: Option  C Explanation:(Place value of 6) - (Face value of 6)
=(6000-6) = 5994.
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3.  (12345679 * 72) = ?

88888888
888888888
898989898
9999999998

```Answer

Answer: Option  B Explanation:12345679*72 = 12345679*(70+2)
= 12345679 * 70+12345679*2
= 864197530 + 24691358
= 888888888. ```

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4.  9548 + 7314 = 8362 =?

8230
8410
8500
8600

```Answer

Answer: Option  C Explanation:16862 = 8362 + x        x = 16862 - 8362 = 8500.                             9548+7314 = 16862 ```

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5.  217*217+ 183*183 = ?

79698
80578
80698
81268

```Answer

Answer: Option  B Explanation:(217)^ + (183)^2 = (200+17)^2 + (200 - 17)^2
= 2{(200)^2 + (17)^2}
= 2{40000 + 289} = (2 * 40289) = 80578. ```

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